If you're new to exercise, give those legs a little stretch before you start your first walk. For the first few days, start slow and ease yourself in to your optimum pace. Do a few warm-up stretches before and warm down stretches after.

1.2 miles might not sound very far, but in the heat of our summer it can be dehydrating. So drink some water before you set out and take a water bottle with you to remain hydrated. If it's really hot, continue to drink water after you return. Some apps can help monitor your hydration during exercise.

If regular long distance walking is new to you, then be sure to pace yourself until you feel your groove. Walk at a steady pace by swinging your arms freely and stand as straight as you can.

Depending on your walking terrain, good thick cotton socks and comfortable and lightweight supportive shoes will be suitable for most people. If your terrain is not flat, you might need to invest in walking boots (especially if your challenge is longer than 1.2 miles). Equally, dress accordingly for your terrain and the weather. Don't forget OCD-UK are happy to send you an OCD-UK t-shirt for your challenge (for the summer months at least!).